coming up, how the fbi found out about the general david petraeus affair and the timing of the fbi's revelations. >>> and a somber ceremony at arlington national cemetery... >> a wreathe was laid by president barack obama at the tomb of the unknowns and he said he will never forget the sacrifices that were made by them and their families. they toppled a dictator and greatly diminished it. >>> dedicated a flagpole and shelters founder said 15th of homeless are homeless men. afterwards a service will be held to pray for current service members. >> a flyover capped over the dedication for the veterans memorial and almost 2000 people showed up and they feet you are granite slabs each representing the cemetery. the memorial will feature brick pavers with veteran's names and they say they are still taking orders on the engravings. we have interviews with some of the families of the fallen heros. just scroll down to the video player. >> it is a veterans day video player, check on it sal. >> some people have to go, we will be watching for any troubled spots that may arise. let's look at west